My betta has a patch on his head, it appears that maybe scales are missing? I'm not sure as I am new to betta keeping.
How many gallons is your tank? 8
Does it have a filter? Yes
Does it have a heater? Yes
What temperature is your tank? 78/25.5
Does your tank...
Please help, I'm really worried! 6 days ago, I did a 100% water change in my 1.5 gallon tank. He is the only resident. 5 days ago he was fine. I fed him his normal 3 pellets in the morning, then fed him an additional 3 pellets that evening, since he would not be fed again for about 30 hours...